France's military is being ousted from more African countries. Here's why

The history of colonialism?

As it is stated as a (rhetorical) question, I'd say probably also due to present ( Wagner) imperialism.

Growing anti-French sentiment has led to street protests in several West and North African countries, while governments that gained power on pledges of redefining relationships with the West say ties with France have not benefited the population. They want to explore options with Russia, China, Turkey and other powers.